Improvement in pump-valves



G. S.5BABTLBTT Pump-Valve.

'.N0.M211,212. Patented Jan. 7, 1879,

. NVPETERS, FHDTOLLITHDGRAPHER, WASHINGTON. I1A C.

'PATENT GEORGE S. BARTLETT, OF LEON, IOWA, ASSIGNOR OF ONE-HALF HIS RIGHT A TO SAMUEL A. GATES, OF SAME PLAGE.

IM PROVEIVIENT IN PUMP-VALVES.

Specification forming part of Letters Patent No. 211,212, dated January 7, 1879; application filed January 8, 1878.

To all whom t may concern:

Be it known that I, GEORGE S. BARTLETT, of Leon, in the county of Decatur and State of Iowa, have invented certain new and useful Improvements in Valves for Double-Action Force and Suction Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which form a part of this specification.

This invention has for its object to construct a suction and force pump-by which a constant y stream of water may be produced without constructing air-chambers in connection with the cylinder.

It consists in a single cylinder constructed with two feed-pipes, one above and one below the piston, and connected to the single or main supply-pipe, and with two outlet-throats, one above and the other below the piston, connected with the sin gle discharge-pipe, and closed by a single double-actin g globular valve, all arranged as hereinafter fully set forth.

ln the drawings, Figure 1 is a vertical sec- A tion of pump constructed according to my invention; and Fig. 2 shows the cylinder and inlet and outlet pipes constructed in one piece.

a is the cylinder, in which the piston al plays. It has in its lower end, below the piston, the inlet throat a2, over which is seated the valve a3, and to which is connected the main supply or inlet pipe b. Above the piston, and near the upper end of the cylinder, is the inlet-throat c. d is a supplemental supply or inlet pipe', which has its lower end connected with the main supply-pipe b below the valve c3, while its upper end extends to and is connected with the upper inlet-throat7 c. It is provided with a valve, d', which I prefer to arrange with its seat below the level ofthe inlet-throat c, so as to have a column and weight of water above it to render it more sensitive to the upward movements of the piston and insure more perfect action. The valves a3 and d open and close alternately in the operation of the pump, and thus provide for a constant and uninterrupted low of wa.-

ter into the cylinder. The cylinder is provided with two outlet-throats, e el, arranged one above and the other below the piston, as shown. These throats are connected by the lower portion, ff, of the single discharge-pipe f. f/ is a doubleacting globular valve, placed within the disch arge-pipe f, and provided with a globular seat, c2, in the upper outlet-throat, c, and correspondingly-formed globular seat g in the discharge-pipef; and in the operation ofthe pump it plays back and forth be tween these two seats, and alternately stops the flow of water from the throats c and el, and at the same time permits a steady flow of water from the cylinder into the upper portion of the o utlet or discharge pipef, as `will be readily understood by reference tothe drawlugs.

The globular seats c2 g prevent any lateral or side movement of the valve g, which will always be forced firmly therein, and will it snugly. The globe-valve g plays freely, and,

being permitted to revolve within its casing, l

all wear by friction will be uniform over its surface.

It will be seen that there is no liability of the valve getting out of order 5 but having been once placed in its casing it will continue to operate effectively until entirely worn out,

' which result will not take place till the entire pump is worn out.

In the drawings, the piston al is indicated as. on the upstroke, by which movement the valvea3 is raised, the valve d closed, and the valve g closed on the seat g. Vith the globular parts in this position the farther upstroke of the piston will force the water out of the upper end ofthe cylinder into the discharge-pipe above the valve g, while the lower end of the cylinder will be filled up by water rushing up through the inlet a2.

The downstroke of the piston will cause the valves to be thrownI into the positions indi cated by dotted lines, a-nd the water in the lower end ot' the cylinder will be forced out through the lower outlet, c, into the vlower end of the disch arge-pipe fand up past the valve g.

It will be seen that by having the single cylinder with the double feed arranged above and below the piston, and having thedouble outlet arranged as described, I secure a constant ilow of Water without having an airchamber in or connected with the cylinder. The only break in the stream will be caused by the 10st motion in the handle, which may be entirely overcome by a very small air-chamber.

I am aware ot' the Patents No. 190,946, dated May 15, 1877, and 156,839, November 17, 1874, and therefore do not claim what is contained therein; but

What I do claim is- In a doubleacting pump having the outletthroats e and el, arranged as described, and

two witnesses.

GEORGE S. BARTLETT. Witnesses:

S. C. CROSBY, C. C. JoHNsoN. 

